If the car model is black or invisible in-game, ensure you have the latest version of installed via Settings > Assetto Corsa > Custom Shader Patch .
: The essential alternative launcher for managing mods. Seat_131_Group_5_assetto_corsa_2.rar
Locate your downloaded Seat_131_Group_5_assetto_corsa_2.rar file. directly into the Content Manager window. If the car model is black or invisible